Dunham-Bush China

What this manufacturer offers

Dunham-Bush’s Chinese company overview distinguishes the international brand’s 1894 origin in Hartford from its research and manufacturing base established in China in 1995. The two dates refer to different parts of the business. The Chinese website names 顿汉布什（中国）工业有限公司 and publishes compressors, large chillers, heat pumps, air-side equipment, industrial refrigeration and controls.

For a plant buyer, the DCLCDX two-stage centrifugal family is a specific route within that portfolio. Its manufacturer page describes cooling and heating ranges, refrigerant alternatives and control options. Those published choices need to be converted into one model-specific equipment schedule before an order can be evaluated.

A historical Yantai government inspection record independently names the Chinese entity and address. That is useful identity evidence, not an assessment of chiller performance. This profile brings the corporate, product and service evidence together while keeping the scope of each record visible.

Chinese entity in historical public record

顿汉布什（中国）工业有限公司 · 91370600613422935AExact entity and credit code in the 2022 registration/public-information inspection list. Not a current registry extract. Source

Address in the same record

1 Dunham-Bush Road, Laishan Economic Development Zone, Yantai, ShandongHistorical recorded address; confirm current order production/dispatch location. Source

China research/manufacturing origin

1995Official company overview; distinct from the global brand’s 1894 origin. Source

Published equipment and selection evidence

series REFERENCE

Dunham-Bush ACTSXHP-R · Non-reversing defrost and radiator duty

Catalogue reference: ACTSXHP-R

Open the equipment selection brief

Parameters and source limits · ACTSXHP-R

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · ACTSXHP-R

Parameter	Published value	Conditions and evidence
Published heating range	235–560 kW	No simultaneous ambient/water selected rating issued. Source
Defrost description	Non-reversing; heating continues without switching to cooling	No inspected output/transient test or patent scope. Source
Capacity-control claim	50–99.99%	Supplier range; selected minimum-load map needed. Source
Refrigerant/oil features	R134a; packed oil separator and oil cooling	Selected charge/service circuit required. Source
Control interface	7-inch Chinese touchscreen; RS485/open MODBUS	Actual registers and ordered custom programme needed. Source
Area/comfort claims	4000–10000 m²; small water-temperature fluctuations	No project heat-loss or numerical defrost tolerance provided. Source

series REFERENCE

Dunham-Bush WCOX · Industrial refrigeration skid and exchanger scope

Catalogue reference: WCOX

Open the equipment selection brief

Parameters and source limits · WCOX

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · WCOX

Parameter	Published value	Conditions and evidence
Core arrangement	LSC open screw with shell/tube condenser and flooded evaporator	Selected exchanger/vessel schedule required. Source
Published temperature span	−110 to 25°C	Not a selected single-stage or fluid rating. Source
Capacity-control statement	Slide valve, 10–99.99%	No inspected stability map across all conditions. Source
Delivery arrangements	Integrated small units; site-assembled larger skids	Actual shipping split and test scope need contract definition. Source
Service design	Individually replaceable exchanger tubes; field-serviceable bearings	Actual access, isolation and repair procedures needed. Source
Controls	RS485 with open MODBUS described	Selected point list and interlocks not issued. Source

series REFERENCE

Dunham-Bush LSCP · Open-screw compressor and oil-system package

Catalogue reference: LSCP

Open the equipment selection brief

Parameters and source limits · LSCP

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · LSCP

Parameter	Published value	Conditions and evidence
Package type	Open screw industrial compressor assembly	Not a complete low-temperature refrigeration system. Source
Headline temperature span	−110 to 25°C	Application range; staging and selected duty unspecified. Source
Oil equipment	Three-stage separator; filtered lubrication/injection oil; oil pump	Selected oil, flow and service schedule required. Source
Carryover statement	Below 5 ppm	Supplier claim without reviewed measurement basis. Source
Controls	Factory PLC/cabinet, faults and current/history records	Actual I/O and control responsibilities needed. Source
Refrigerant-list ambiguity	RA34a printed in source	Not corrected into an assumed selected refrigerant. Source

series REFERENCE

Dunham-Bush AVX-R / ACX(HP)-HR · Outdoor screw duty and defrost

Catalogue reference: AVX-R / ACX(HP)-HR

Open the equipment selection brief

Parameters and source limits · AVX-R / ACX(HP)-HR

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · AVX-R / ACX(HP)-HR

Parameter	Published value	Conditions and evidence
AVX-R cooling span	437–1236 kW	Selected ambient/water conditions needed. Source
ACX(HP)-HR published spans	358–1640 kW cooling and heating	Not simultaneous rating proof. Source
Distinct control features	AVX-R inverter; ACX(HP)-HR segmented defrost	Actual maps and mode sequences required. Source
Shared construction	Hermetic vertical screw, flooded evaporator, HFC-134a	Selected charge and oil-service scope not issued. Source
AVX-R options	Heat pump/recovery/free cooling/variable-speed fans	Not automatically part of the base machine. Source
Energy/acoustic comparisons	About 23% IPLV increase; noise reduction language	No independently checked baseline or measurement boundary. Source

series REFERENCE

Dunham-Bush BWHP-E / WCSHP · Ground and water-source selection

Catalogue reference: BWHP-E / WCSHP

Open the equipment selection brief

Parameters and source limits · BWHP-E / WCSHP

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · BWHP-E / WCSHP

Parameter	Published value	Conditions and evidence
BWHP-E sizes	30, 40 and 50 kW	No simultaneous selected rating conditions inspected. Source
WCSHP sizes	20 and 30 RT	Not converted into an assumed heating capacity. Source
Compression	Fully hermetic scroll	Selected refrigerant and operating map required. Source
BWHP-E hydraulic feature	Internal hydraulic module described	Pump/valve/expansion contents need order-level definition. Source
WCSHP source list	Soil, groundwater, surface/reclaimed/wastewater	Compatibility and permissions not established by application wording. Source
Energy/hot-water claims	Performance up to 5.0; free hot water wording	No inspected test boundary or zero-input guarantee. Source

series REFERENCE

Dunham-Bush integrated cooling station · Factory and site scope

Catalogue reference: Central integrated cooling station

Open the equipment selection brief

Parameters and source limits · Central integrated cooling station

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · Central integrated cooling station

Parameter	Published value	Conditions and evidence
Published cooling span	379–1773 kW	No selected full-package rating reviewed. Source
Delivery concept	Factory-prefabricated whole unit or modules	Actual shipping split and site work require issued drawings. Source
Circuit statement	Multiple compressor heads on one circuit	Not automatic independent-circuit redundancy. Source
Control package	PLC/touchscreen; optional DBbox	Selected points and remote access scope needed. Source
Comparative claims	Cost/time/space and energy savings advertised	No inspected comparison baseline or project guarantee. Source

series REFERENCE

Dunham-Bush WCDSX-D · Low-temperature fluid and screw duty

Catalogue reference: WCDSX-D

Open the equipment selection brief

Parameters and source limits · WCDSX-D

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · WCDSX-D

Parameter	Published value	Conditions and evidence
Published cooling range	92–756 kW	No selected condition or capacity at the minimum temperature supplied. Source
Minimum leaving temperature	Down to −35°C	Fluid type/concentration and simultaneous rating unspecified. Source
Compressor	Semi-hermetic twin-screw with internal oil separation	Selected maintenance and oil requirements needed. Source
Motor protection feature	Intermediate-pressure liquid injection	No issued injection control settings reviewed. Source
Options	Other refrigerants including R404A; flow switch; isolators	Base refrigerant and included protection need order confirmation. Source

series REFERENCE

Dunham-Bush WCHXHP · Waste-heat source and high-temperature duty

Catalogue reference: WCHXHP

Open the equipment selection brief

Parameters and source limits · WCHXHP

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · WCHXHP

Parameter	Published value	Conditions and evidence
Published heating range	423–3401 kW	Selected source/output-temperature rating not supplied. Source
Temperature wording	Up to 120°C hot water; 70–120°C water or steam described	No steam pressure, dryness or generation diagram reviewed. Source
Compressor arrangement	Semi-hermetic twin-screw; intermediate-pressure injection	Actual refrigerant and selected operating map required. Source
Heat-exchanger/oil features	Falling-film evaporator; condenser oil separation; level-sensor control	Actual fluids, materials and pressure limits needed. Source
Source application	Medium/low-grade wastewater; water/ground-source positioning	No universal wastewater compatibility established. Source
Environmental boundary	No-greenhouse-gas statement excluded	No lifecycle or power-supply emission assessment reviewed. Source

series REFERENCE

Dunham-Bush CR / CRCF · Fan-coil rating and control comparison

Catalogue reference: CR / CRCF

Open the equipment selection brief

Parameters and source limits · CR / CRCF

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · CR / CRCF

Parameter	Published value	Conditions and evidence
CR airflow statement	360–3300 m³/h	Family range; exact selected speed/pressure needed. Source
CRCF printed range	1500–15000 m³/h	Not reconciled with CR; request exact model schedule. Source
CRCF motor/fan	Brushless DC; forward-curved double-inlet centrifugal fan	Source arrangement, not independently measured performance. Source
CRCF comparison claims	Around 40% average savings; down to 20.7 dB	No inspected baseline, speed or acoustic measurement conditions. Source
CR accessories	Thermostat, filters, two-way valve, flexible joint, extended pan, UV lamp	Optional; UV option does not prove sanitised room air. Source
Certificate wording	CRAA and AHRI claimed	Current exact-model issuer records not reviewed. Source

series REFERENCE

Dunham-Bush DKFP · Duct pressure and service-access selection

Catalogue reference: DKFP

Open the equipment selection brief

Parameters and source limits · DKFP

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · DKFP

Parameter	Published value	Conditions and evidence
Published airflow	1500–15000 m³/h	No selected pressure/coil rating schedule inspected. Source
Construction choices	L vertical double-panel; D slim ceiling double-panel; C ultra-slim single-panel	One family, distinct selected construction boundaries. Source
Fan arrangement	Belt-driven multi-blade centrifugal fan	Static-pressure choices described; actual fan curve required. Source
Coil/drain construction	Hydrophilic aluminium fins and one-piece condensate pan	No installation leak/condensation guarantee. Source
Optional equipment	Humidifier, filter grades, speed/frost/filter alarms and remote jet	Exact selected accessory/control schedule needed. Source

series REFERENCE

Dunham-Bush DMA / DAHU / CAHU · Configurable AHU section selection

Catalogue reference: DMA / DAHU / CAHU

Open the equipment selection brief

Parameters and source limits · DMA / DAHU / CAHU

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · DMA / DAHU / CAHU

Parameter	Published value	Conditions and evidence
Compared families	DMA modular, DAHU combined, CAHU clean-type	One page for related configurable AHUs; no model-variant URL multiplication. Source
Published airflow span	1500–150000 m³/h	Does not determine cooling/heating duty or external pressure. Source
DMA casing features	Sandwich panels, selectable insulation, dual seals, inclined pan	No measured leakage/thermal schedule reviewed. Source
DAHU casing statements	Labyrinth insulation; CD1/CL1/CB1/CT1 classes	Supplier report/certification statements not independently checked. Source
CAHU design distinctions	Positive-pressure supply; optional stainless parts; extended filters	No guaranteed sterility or cleanroom qualification. Source
Optional functions	Filtration, humidification, heating, sound treatment, recovery and controls	Selected equipment list needed; not every function standard. Source

series REFERENCE

Dunham-Bush WCFX-RH · Screw cooling and optional heat recovery

Catalogue reference: WCFX-RH

Open the equipment selection brief

Parameters and source limits · WCFX-RH

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · WCFX-RH

Parameter	Published value	Conditions and evidence
Published cooling range	206–2293 kW	No selected simultaneous-condition rating supplied. Source
Compression arrangement	Vertical fully hermetic twin-screw with internal oil separation	Maintenance-free wording not a complete service exemption. Source
Heat-exchanger features	Falling-film evaporator; condenser subcooler; economizer	Actual water pressure drops and operating map required. Source
Named refrigerant	HFC-134a	Selected charge and service documentation not reviewed. Source
Heat recovery	Partial or full recovery options	No source heating-capacity schedule; not assumed standard. Source
Interfaces	Standard RS485; optional remote/group controls and protocol choices	Actual registers and installed options required. Source

series REFERENCE

Dunham-Bush DCLCDZ · Refrigerant-lubricated ceramic bearings

Catalogue reference: DCLCDZ

Open the equipment selection brief

Parameters and source limits · DCLCDZ

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · DCLCDZ

Parameter	Published value	Conditions and evidence
Published cooling range	300–700 RT	No selected water-temperature/input schedule reviewed. Source
Named refrigerant	R1233zd(E)	Exact order charge, safety and environmental documents required. Source
Bearing design	Ceramic bearings with direct refrigerant lubrication/cooling	Supplier construction statement; operating envelope not issued. Source
Compressor/evaporator	Direct-drive two-stage centrifugal; falling-film evaporator	Active liquid-level control described. Source
Environmental wording limit	No-chlorine assertion excluded	No inspected primary chemistry declaration; no platform environmental guarantee. Source
Controls	CCS TOUCH; optional I-VISION and protocol choices	Selected registers/software and protective sequence required. Source

series REFERENCE

Dunham-Bush DCLCDT · Twin-head staging and ice duty

Catalogue reference: DCLCDT

Open the equipment selection brief

Parameters and source limits · DCLCDT

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · DCLCDT

Parameter	Published value	Conditions and evidence
Headline capacity label	Ice-storage capacity 2000–6000 RT	RT label is not a time-based storage-energy schedule. Source
Compression arrangement	Two stages, twin heads, series counterflow	Selected circuit and flow arrangement required. Source
Capacity-control statement	10–99.99%	Supplier range without a selected stability map. Source
Lubrication protection	Variable-speed oil pump and high-level oil tank	No tested supply-loss ride-through duration issued. Source
Water/start design	Single-pass water path and sequential compressor starts	Actual pressure drops and electrical demands needed. Source
Comparison claims	About 12% and 6% improvements; twenty-year bearing life	Uninspected comparison conditions and life evidence. Source

series REFERENCE

Dunham-Bush DCLCDA · Gas bearings and year-round cooling

Catalogue reference: DCLCDA

Open the equipment selection brief

Parameters and source limits · DCLCDA

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · DCLCDA

Parameter	Published value	Conditions and evidence
Published range	50–300 RT	No selected water-condition rating table inspected. Source
Bearing/compressor description	Oil-free gas/liquid two-phase suspension; static-pressure gas bearing	Supplier architecture language; actual bearing sequence needs documentation. Source
Heat-exchanger/control features	Flooded evaporator, economizer and two-stage throttling	Active liquid-level control described; no controller settings supplied. Source
Refrigerants named	R134a and R513A	Selected order must identify actual refrigerant and charge. Source
Controller/integration	CCS TOUCH and optional I-VISION/protocol choices	No selected register list or plant control design reviewed. Source

series REFERENCE

Dunham-Bush DCLC(D)M · Magnetic bearings and modular retrofit

Catalogue reference: DCLC(D)M

Open the equipment selection brief

Parameters and source limits · DCLC(D)M

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · DCLC(D)M

Parameter	Published value	Conditions and evidence
Published cooling range	100–1400 RT headline; modular paragraph up to 1500 RT	Conflicting range boundaries; obtain issued selected configuration. Source
Named module sizes	100, 125 and 150 RT	Family choices, not selected ratings at project temperatures. Source
Compressor architecture	Magnetic bearings, permanent-magnet motor and direct drive	Supplier design description; no independent efficiency test reviewed. Source
Capacity control	Speed and inlet-guide-vane coordination	Actual turndown and stable operating map not supplied. Source
Refrigerant choices	R134a, R513A and R1234ze	Order-specific choice and handling documentation required. Source
Control options	CCS TOUCH; I-VISION; Modbus/Bacnet/Profibus choices	Protocols and remote/group control are configuration-dependent. Source

series REFERENCE

DCLCDX two-stage centrifugal chiller and heat-pump family

Catalogue reference: DCLCDX

Open the equipment selection brief

Parameters and source limits · DCLCDX

Swipe the table, or focus it and use arrow keys, to read conditions and sources.

Manufacturer-published information · DCLCDX

Parameter	Published value	Conditions and evidence
Published cooling family range	300–3,000 RT	Manufacturer-wide DCLCDX cooling range, not an exact model selection or a project-specific rating. Source
Published heating family range	300–2,500 RT	Manufacturer heating range kept in its original unit; no heating-water conditions supplied in the readable schedule. Source
Published refrigerant alternatives	R134a, R513A and R1234ze	Choices across the offering. The page does not map each refrigerant to a complete model/duty schedule. Source
Named unit controls	Third-generation CCS TOUCH	Manufacturer controller description; DB-VISION and Modbus/BACnet/Profibus are listed separately as integration options. Source

Separate the international brand from the Chinese equipment contract

External records and their limits

a registration-information check, not a product test

The Yantai-hosted document titled the first 2022 joint random-inspection results lists the Chinese company in row 6 on page 1. It records credit code 91370600613422935A, the Dunham-Bush Road address and a normal result for registration matters and enterprise public information. The stated inspection window is 27 April–31 July.

This is a historical record of that administrative scope. It does not certify equipment capacity, energy performance, factory quality systems or current environmental compliance. Match the entity on the current commercial documents separately and obtain the specific technical evidence for the ordered machine.

Sources and review scope

Compiled by HVACDeck Editorial. Page review: 2026-10-11. Publications are attributed below; their statements are not independent measurements by this platform.

1. Official China company overviewChecked 2026-10-11 · Global origin and China research/manufacturing history distinguished; portfolio and declared service coverage read.
2. DCLCDX official family publicationChecked 2026-10-11 · Cooling/heating ranges and configuration, certification and control claims read in full.
3. Official China service scopeChecked 2026-10-11 · Service categories and legacy-imported-unit discussion read; no destination-specific SLA established.
4. Yantai 2022 joint inspection resultsChecked 2026-10-11 · Complete three-page PDF read; row 6/page 1 is registration/public-information scope, not product testing.
5. AHRI water-chilling certification programmeChecked 2026-10-11 · Original certification scope and selection-sheet verification guidance; no exact DCLCDX listing independently matched.
6. USGBC product-manufacturer guidanceChecked 2026-10-11 · Original guidance: LEED does not certify products; project contribution is a separate assessment.
7. Yantai trade-promotion committee company featureChecked 2026-10-11 · 10 May 2024 promotional company feature read in full; manufacturing/test/network statements are reported claims, not an independent test audit.
8. Official ACTSXHP-R non-reversing-defrost pageChecked 2026-10-11 · Complete range, defrost/oil/control descriptions read; original outdoor assembly rendering inspected. Area and comfort claims not adopted as project ratings.
9. Official WCOX industrial unit pageChecked 2026-10-11 · Full compressor/exchanger/skid/testing and control descriptions read; original unit rendering inspected.
10. Official LSCP industrial compressor packageChecked 2026-10-11 · Complete open-screw/oil/PLC description read; original package rendering inspected; refrigerant typo retained as unresolved.
11. Official AVX-R air-cooled inverter screw pageChecked 2026-10-11 · Full range/options and comparative claims read; original rendering inspected.
12. Official ACX(HP)-HR screw heat-pump pageChecked 2026-10-11 · Full ranges and segmented-defrost description read; related offer consolidated.
13. Official BWHP-E modular ground-source pageChecked 2026-10-11 · Full sizes, hydraulic module and feature descriptions read; original rendering inspected.
14. Official WCSHP modular source heat-pump pageChecked 2026-10-11 · Full source list/options and claims read; related offer consolidated rather than duplicated.
15. Official central integrated cooling stationChecked 2026-10-11 · Full prefab/circuit/control and comparative statements read; original integrated assembly rendering inspected.
16. Official WCDSX-D low-temperature unitChecked 2026-10-11 · Full range, minimum-temperature, compressor and option text read; original equipment rendering inspected.
17. Official WCHXHP high-temperature heat-pump pageChecked 2026-10-11 · Full range, temperature/source and screw/protection description read; original equipment rendering inspected. Steam and emission claims qualified.
18. Official CR fan-coil pageChecked 2026-10-11 · Full construction/range/accessory list and original rendering reviewed.
19. Official CRCF DC fan-coil pageChecked 2026-10-11 · Full DC/acoustic/energy text read; large printed airflow range retained without guessed correction.
20. Official DKFP cabinet AHU pageChecked 2026-10-11 · Full construction/fan/accessory descriptions and vertical/ceiling family rendering reviewed.
21. Official DMA modular AHU pageChecked 2026-10-11 · Complete section/casing/optional-control descriptions and rendering read.
22. Official DAHU combined AHU pageChecked 2026-10-11 · Full casing classes and certificate claims read; issuer records not checked.
23. Official CAHU clean AHU pageChecked 2026-10-11 · Full positive-pressure, materials and filter wording read; no sterility guarantee adopted.
24. Official WCFX-RH screw chiller pageChecked 2026-10-11 · Full range, screw/oil architecture and optional recovery/features read; original family rendering inspected.
25. Official DCLCDZ HFO chiller pageChecked 2026-10-11 · Full architecture and original rendering reviewed; unsupported no-chlorine statement excluded and certifications qualified.
26. Official DCLCDT two-stage twin-head pageChecked 2026-10-11 · Full description and original twin-compressor rendering read; ice-capacity label and feature comparison limits retained.
27. Official DCLCDA gas-bearing chiller pageChecked 2026-10-11 · Complete range, compressor/bearing, evaporator and control description read; original rendering inspected.
28. Official DCLC(D)M product pageChecked 2026-10-11 · Full architecture/features and original magnetic-bearing family rendering reviewed; conflicting headline/modular limits retained.

How we review sources · Represent this factory or request a correction

Continue your equipment research

DCLCDX cooling/heating ranges, configuration and certification checks

Prepare your equipment brief

Heat pump quotations: compare capacity at the design temperature Chiller quotations: full-load and part-load performance Ventilation fan enquiries: define the duty point Refrigerants in HVAC quotations: GWP, safety class and market rules Compressor types in chillers and condensing units: scroll, reciprocating, screw and centrifugal Equipment sound data: sound power, sound pressure and how to compare them Centrifugal, axial and mixed-flow fans, and what a smoke-extract rating means